[2N15-16] Divertor Engineering

[2N16] Development of the divertor heat removal component by the Advanced Multi-Step Brazing (AMSB)

*Masayuki Tokitani¹, Yukinori Hamaji¹, Yutaka Hiraoka², Suguru Masuzaki¹, Hitoshi Tamura¹, Hiroyuki Noto¹, Teruya Tanaka¹, Tatsuya Tsuneyoshi³, Yoshiyuki Tsuji³, Takeo Muroga¹ (1. NIFS, 2. Okayama Univ. of Sci., 3. Nagoya Univ.)

Keywords:AMSB, divertor, tungsten, copper alloy, heat loading

The “Advanced Multi-Step Brazing (AMSB)” was newly developed for fabrication of the W/copper alloy (GlidCop) divertor heat removal component in a fusion reactor. The advantage of the AMSB is that the leak-tightness joint between GlidCop (GlidCop/GlidCop), and stainless steel (SUS) and GlidCop (SUS/GlidCop) can be realized by application of the “advanced brazing technique” which was developed in our previous work. The prototype AMSB component with the rectangle shaped cooling flow path and the V-shaped staggered rib structure was successfully produced, in which case a pre-processed rectangle shaped cooling flow path in the GlidCop heat sink was sealed by SUS lid with a leak-tightness condition. The component showed an excellent heat removal capability under the reactor relevant conditions with ~30 MW/m².